src/os2/dialog.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dialog.cpp
   3 // Purpose:     wxDialog class
   4 // Author:      David Webster
   5 // Modified by:
   6 // Created:     10/14/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) David Webster
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifndef WX_PRECOMP
  16 #include "wx/dialog.h"
  17 #include "wx/utils.h"
  18 #include "wx/frame.h"
  19 #include "wx/app.h"
  20 #include "wx/settings.h"
  21 #include "wx/intl.h"
  22 #include "wx/log.h"
  23 #endif
  24
  25 #include "wx/os2/private.h"
  26 #include "wx/log.h"
  27
  28 #define wxDIALOG_DEFAULT_X 300
  29 #define wxDIALOG_DEFAULT_Y 300
  30
  31 // Lists to keep track of windows, so we can disable/enable them
  32 // for modal dialogs
  33 wxWindowList wxModalDialogs;
  34 wxWindowList wxModelessWindows;  // Frames and modeless dialogs
  35 extern wxList WXDLLEXPORT wxPendingDelete;
  36
  37    IMPLEMENT_DYNAMIC_CLASS(wxDialog, wxPanel)
  38
  39    BEGIN_EVENT_TABLE(wxDialog, wxPanel)
  40       EVT_SIZE(wxDialog::OnSize)
  41       EVT_BUTTON(wxID_OK, wxDialog::OnOK)
  42       EVT_BUTTON(wxID_APPLY, wxDialog::OnApply)
  43       EVT_BUTTON(wxID_CANCEL, wxDialog::OnCancel)
  44       EVT_CHAR_HOOK(wxDialog::OnCharHook)
  45       EVT_SYS_COLOUR_CHANGED(wxDialog::OnSysColourChanged)
  46       EVT_CLOSE(wxDialog::OnCloseWindow)
  47    END_EVENT_TABLE()
  48
  49 wxDialog::wxDialog()
  50 {
  51     m_isShown = FALSE;
  52     m_modalShowing = FALSE;
  53
  54     SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
  55 }
  56
  57 bool wxDialog::Create(wxWindow *parent, wxWindowID id,
  58            const wxString& title,
  59            const wxPoint& pos,
  60            const wxSize& size,
  61            long style,
  62            const wxString& name)
  63 {
  64 #if wxUSE_TOOLTIPS
  65     m_hwndToolTip = 0;
  66 #endif
  67
  68     SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
  69     SetName(name);
  70
  71     if (!parent)
  72         wxTopLevelWindows.Append(this);
  73
  74     if (parent) parent->AddChild(this);
  75
  76     if ( id == -1 )
  77         m_windowId = (int)NewControlId();
  78     else
  79         m_windowId = id;
  80
  81     int x = pos.x;
  82     int y = pos.y;
  83     int width = size.x;
  84     int height = size.y;
  85
  86     if (x < 0) x = wxDIALOG_DEFAULT_X;
  87     if (y < 0) y = wxDIALOG_DEFAULT_Y;
  88
  89     m_windowStyle = style;
  90
  91     m_isShown = FALSE;
  92     m_modalShowing = FALSE;
  93
  94     if (width < 0)
  95         width = 500;
  96     if (height < 0)
  97         height = 500;
  98
  99     // TODO: convert below to OS/2 PM code
 100
 101     // All dialogs should really have this style
 102 //    m_windowStyle |= wxTAB_TRAVERSAL;
 103 //
 104 //    WXDWORD extendedStyle = MakeExtendedStyle(m_windowStyle);
 105 //    if (m_windowStyle & wxSTAY_ON_TOP)
 106 //        extendedStyle |= WS_EX_TOPMOST;
 107 //
 108     // Allows creation of dialogs with & without captions under MSWindows,
 109     // resizeable or not (but a resizeable dialog always has caption -
 110     // otherwise it would look too strange)
 111 //    const wxChar *dlg;
 112 //    if ( style & wxRESIZE_BORDER )
 113 //        dlg = wxT("wxResizeableDialog");
 114 //    else if ( style & wxCAPTION )
 115 //        dlg = wxT("wxCaptionDialog");
 116 //    else
 117 //        dlg = wxT("wxNoCaptionDialog");
 118 //    MSWCreate(m_windowId, parent, NULL, this, NULL,
 119 //              x, y, width, height,
 120 //              0, // style is not used if we have dlg template
 121 //              dlg,
 122 //              extendedStyle);
 123 //
 124 //    HWND hwnd = (HWND)GetHWND();
 125 //
 126 //    if ( !hwnd )
 127 //    {
 128 //        wxLogError(wxT("Failed to create dialog."));
 129 //
 130 //        return FALSE;
 131 //    }
 132 //
 133 //    SubclassWin(GetHWND());
 134 //
 135 //    SetWindowText(hwnd, title);
 136 //    SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
 137 //
 138     return TRUE;
 139 }
 140
 141 void wxDialog::SetModal(bool flag)
 142 {
 143     if ( flag )
 144         m_windowStyle |= wxDIALOG_MODAL ;
 145     else if ( m_windowStyle & wxDIALOG_MODAL )
 146         m_windowStyle -= wxDIALOG_MODAL ;
 147
 148       wxModelessWindows.DeleteObject(this);
 149       if (!flag)
 150           wxModelessWindows.Append(this);
 151 }
 152
 153 wxDialog::~wxDialog()
 154 {
 155     m_isBeingDeleted = TRUE;
 156
 157     wxTopLevelWindows.DeleteObject(this);
 158
 159     Show(FALSE);
 160
 161     if (m_modalShowing)
 162     {
 163         if (GetParent() && GetParent()->GetHWND())
 164            // TODO: bring the parent to the top
 165            return;
 166     }
 167
 168     m_modalShowing = FALSE;
 169     if ( (GetWindowStyleFlag() & wxDIALOG_MODAL) != wxDIALOG_MODAL )
 170         wxModelessWindows.DeleteObject(this);
 171
 172
 173     // If this is the last top-level window, exit.
 174     if (wxTheApp && (wxTopLevelWindows.Number() == 0))
 175     {
 176       wxTheApp->SetTopWindow(NULL);
 177
 178       if (wxTheApp->GetExitOnFrameDelete())
 179       {
 180          // TODO: exit
 181       }
 182     }
 183 }
 184
 185 // By default, pressing escape cancels the dialog
 186 void wxDialog::OnCharHook(wxKeyEvent& event)
 187 {
 188     if (GetHWND())
 189     {
 190         if (event.m_keyCode == WXK_ESCAPE)
 191         {
 192             // Behaviour changed in 2.0: we'll send a Cancel message
 193             // to the dialog instead of Close.
 194             wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 195             cancelEvent.SetEventObject( this );
 196             GetEventHandler()->ProcessEvent(cancelEvent);
 197
 198             return;
 199         }
 200     }
 201     // We didn't process this event.
 202     event.Skip();
 203 }
 204
 205 void wxDialog::OnPaint(wxPaintEvent& event)
 206 {
 207   // No: if you call the default procedure, it makes
 208   // the following painting code not work.
 209 //  wxWindow::OnPaint(event);
 210 }
 211
 212 void wxDialog::Fit()
 213 {
 214     wxWindow::Fit();
 215 }
 216
 217 void wxDialog::Iconize(bool WXUNUSED(iconize))
 218 {
 219     // Windows dialog boxes can't be iconized
 220 }
 221
 222 bool wxDialog::IsIconized() const
 223 {
 224     return FALSE;
 225 }
 226
 227 void wxDialog::DoSetClientSize(int width, int height)
 228 {
 229     // TODO: Convert the below to OS/2 PM code
 230
 231 //    HWND hWnd = (HWND) GetHWND();
 232 //    RECT rect;
 233 //    ::GetClientRect(hWnd, &rect);
 234 //
 235 //    RECT rect2;
 236 //    GetWindowRect(hWnd, &rect2);
 237 //
 238     // Find the difference between the entire window (title bar and all)
 239     // and the client area; add this to the new client size to move the
 240     // window
 241 //    int actual_width = rect2.right - rect2.left - rect.right + width;
 242 //    int actual_height = rect2.bottom - rect2.top - rect.bottom + height;
 243
 244 //    MoveWindow(hWnd, rect2.left, rect2.top, actual_width, actual_height, TRUE);
 245 //
 246 //    wxSizeEvent event(wxSize(actual_width, actual_height), m_windowId);
 247 //    event.SetEventObject( this );
 248 //    GetEventHandler()->ProcessEvent(event);
 249 }
 250 void wxDialog::GetPosition(int *x, int *y) const
 251 {
 252     // TODO: Convert
 253 //  HWND hWnd = (HWND) GetHWND();
 254 //  RECT rect;
 255 //  GetWindowRect(hWnd, &rect);
 256
 257 //  *x = rect.left;
 258 //  *y = rect.top;
 259 }
 260
 261 bool wxDialog::IsShown() const
 262 {
 263   return m_isShown;
 264 }
 265
 266 bool wxDialog::IsModal() const
 267 {
 268     return wxModalDialogs.Find((wxDialog *)this) != 0; // const_cast
 269 }
 270
 271 bool wxDialog::Show(bool show)
 272 {
 273     // TODO: This is involved code, look at msw port for details
 274     return FALSE;
 275 }
 276
 277 void wxDialog::SetTitle(const wxString& title)
 278 {
 279     ::WinSetWindowText((HWND) GetHWND(), title.c_str());
 280 }
 281
 282 wxString wxDialog::GetTitle() const
 283 {
 284     ::WinQueryWindowText((HWND) GetHWND(), 1000, wxBuffer);
 285     return wxString(wxBuffer);
 286 }
 287
 288 void wxDialog::Centre(int direction)
 289 {
 290   int x_offset,y_offset ;
 291   int display_width, display_height;
 292   int  width, height, x, y;
 293   wxWindow *parent = GetParent();
 294   if ((direction & wxCENTER_FRAME) && parent)
 295   {
 296       parent->GetPosition(&x_offset,&y_offset) ;
 297       parent->GetSize(&display_width,&display_height) ;
 298   }
 299   else
 300   {
 301     wxDisplaySize(&display_width, &display_height);
 302     x_offset = 0 ;
 303     y_offset = 0 ;
 304   }
 305
 306   GetSize(&width, &height);
 307   GetPosition(&x, &y);
 308
 309   if (direction & wxHORIZONTAL)
 310     x = (int)((display_width - width)/2);
 311   if (direction & wxVERTICAL)
 312     y = (int)((display_height - height)/2);
 313
 314   SetSize(x+x_offset, y+y_offset, width, height);
 315 }
 316
 317 // Replacement for Show(TRUE) for modal dialogs - returns return code
 318 int wxDialog::ShowModal()
 319 {
 320     m_windowStyle |= wxDIALOG_MODAL;
 321     Show(TRUE);
 322     return GetReturnCode();
 323 }
 324
 325 void wxDialog::EndModal(int retCode)
 326 {
 327     SetReturnCode(retCode);
 328     // TODO modal un-showing
 329     Show(FALSE);
 330 }
 331
 332 // Define for each class of dialog and control
 333 WXHBRUSH wxDialog::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
 334       WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 335 {
 336     return 0;
 337 }
 338 // Standard buttons
 339 void wxDialog::OnOK(wxCommandEvent& event)
 340 {
 341     if ( Validate() && TransferDataFromWindow() )
 342     {
 343         if ( IsModal() )
 344             EndModal(wxID_OK);
 345         else
 346         {
 347             SetReturnCode(wxID_OK);
 348             this->Show(FALSE);
 349         }
 350     }
 351 }
 352
 353 void wxDialog::OnApply(wxCommandEvent& event)
 354 {
 355     if (Validate())
 356         TransferDataFromWindow();
 357     // TODO probably need to disable the Apply button until things change again
 358 }
 359
 360 void wxDialog::OnCancel(wxCommandEvent& event)
 361 {
 362     if ( IsModal() )
 363         EndModal(wxID_CANCEL);
 364     else
 365     {
 366         SetReturnCode(wxID_CANCEL);
 367         this->Show(FALSE);
 368     }
 369 }
 370
 371 void wxDialog::OnCloseWindow(wxCloseEvent& event)
 372 {
 373     // We'll send a Cancel message by default,
 374     // which may close the dialog.
 375     // Check for looping if the Cancel event handler calls Close().
 376
 377     // Note that if a cancel button and handler aren't present in the dialog,
 378     // nothing will happen when you close the dialog via the window manager, or
 379     // via Close().
 380     // We wouldn't want to destroy the dialog by default, since the dialog may have been
 381     // created on the stack.
 382     // However, this does mean that calling dialog->Close() won't delete the dialog
 383     // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
 384     // sure to destroy the dialog.
 385     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 386
 387     static wxList closing;
 388
 389     if ( closing.Member(this) )
 390         return;
 391
 392     closing.Append(this);
 393
 394     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 395     cancelEvent.SetEventObject( this );
 396     GetEventHandler()->ProcessEvent(cancelEvent); // This may close the dialog
 397
 398     closing.DeleteObject(this);
 399 }
 400
 401 // Destroy the window (delayed, if a managed window)
 402 bool wxDialog::Destroy()
 403 {
 404     if (!wxPendingDelete.Member(this))
 405         wxPendingDelete.Append(this);
 406     return TRUE;
 407 }
 408
 409 void wxDialog::OnSize(wxSizeEvent& WXUNUSED(event))
 410 {
 411   // if we're using constraints - do use them
 412   #if wxUSE_CONSTRAINTS
 413     if ( GetAutoLayout() )
 414     {
 415       Layout();
 416     }
 417   #endif
 418 }
 419
 420 void wxDialog::OnSysColourChanged(wxSysColourChangedEvent& event)
 421 {
 422   SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
 423   Refresh();
 424 }
 425
 426 MRESULT wxDialog::OS2WindowProc(HWND hwnd, WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 427 {
 428     MRESULT rc = 0;
 429     bool    processed = FALSE;
 430
 431     switch ( message )
 432     {
 433         case WM_CLOSE:
 434             // if we can't close, tell the system that we processed the
 435             // message - otherwise it would close us
 436             processed = !Close();
 437             break;
 438     }
 439
 440     if ( !processed )
 441         rc = wxWindow::OS2WindowProc(hwnd, message, wParam, lParam);
 442
 443     return rc;
 444 }
 445